- [網(wǎng)絡(luò)] 根系生物量；地上部和地下部生物量；根生物量
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root biomass中文什么意思
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- on the loess plateau, water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even-aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0.982, while the value of on southern exposition was less than 0.982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
在中國西北黃土高原地區(qū),水分是樹木生長發(fā)育的主要限制因子.根系分布特征由于反映了樹木對環(huán)境條件的利用程度而具有更加特殊的生態(tài)意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調(diào)查了根系分布特征.根系垂直分布特征的調(diào)查結(jié)果表明,在所有立地上,根系生物量隨著深度的增加而降低,其中細(xì)根的分布深度大于粗根的分布深度.方差分析結(jié)果表明:不同立地上不同徑級根系的分布特征也有明顯的差別,粗根是差異存在的主要原因,陰坡立地上的根系生物量,特別是細(xì)根生物量大于陽坡立地上的.對根系消弱系數(shù)的分析結(jié)果表明,陰坡立地上的根系消弱系數(shù)大于0.982,而陽坡立地上的根系消弱系數(shù)小于0.982,說明陰坡立地上刺槐根系的生物量在深層土壤中的分布相對量更大一些.其中細(xì)根的根系消弱系數(shù)大于粗根的,這種根系分布特征有利于根系對深層土壤水分養(yǎng)分的吸收利用,進(jìn)而促進(jìn)樹木地上部分的生長發(fā)育.圖3表3參15 - on the loess plateau, water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even-aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0.982, while the value of on southern exposition was less than 0.982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
在中國西北黃土高原地區(qū),水分是樹木生長發(fā)育的主要限制因子.根系分布特征由于反映了樹木對環(huán)境條件的利用程度而具有更加特殊的生態(tài)意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調(diào)查了根系分布特征.根系垂直分布特征的調(diào)查結(jié)果表明,在所有立地上,根系生物量隨著深度的增加而降低,其中細(xì)根的分布深度大于粗根的分布深度.方差分析結(jié)果表明:不同立地上不同徑級根系的分布特征也有明顯的差別,粗根是差異存在的主要原因,陰坡立地上的根系生物量,特別是細(xì)根生物量大于陽坡立地上的.對根系消弱系數(shù)的分析結(jié)果表明,陰坡立地上的根系消弱系數(shù)大于0.982,而陽坡立地上的根系消弱系數(shù)小于0.982,說明陰坡立地上刺槐根系的生物量在深層土壤中的分布相對量更大一些.其中細(xì)根的根系消弱系數(shù)大于粗根的,這種根系分布特征有利于根系對深層土壤水分養(yǎng)分的吸收利用,進(jìn)而促進(jìn)樹木地上部分的生長發(fā)育.圖3表3參15 - on the loess plateau, water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even-aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0.982, while the value of on southern exposition was less than 0.982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
在中國西北黃土高原地區(qū),水分是樹木生長發(fā)育的主要限制因子.根系分布特征由于反映了樹木對環(huán)境條件的利用程度而具有更加特殊的生態(tài)意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調(diào)查了根系分布特征.根系垂直分布特征的調(diào)查結(jié)果表明,在所有立地上,根系生物量隨著深度的增加而降低,其中細(xì)根的分布深度大于粗根的分布深度.方差分析結(jié)果表明:不同立地上不同徑級根系的分布特征也有明顯的差別,粗根是差異存在的主要原因,陰坡立地上的根系生物量,特別是細(xì)根生物量大于陽坡立地上的.對根系消弱系數(shù)的分析結(jié)果表明,陰坡立地上的根系消弱系數(shù)大于0.982,而陽坡立地上的根系消弱系數(shù)小于0.982,說明陰坡立地上刺槐根系的生物量在深層土壤中的分布相對量更大一些.其中細(xì)根的根系消弱系數(shù)大于粗根的,這種根系分布特征有利于根系對深層土壤水分養(yǎng)分的吸收利用,進(jìn)而促進(jìn)樹木地上部分的生長發(fā)育.圖3表3參15 - abstract : on the loess plateau, water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even-aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0.982, while the value of on southern exposition was less than 0.982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
文摘:在中國西北黃土高原地區(qū),水分是樹木生長發(fā)育的主要限制因子.根系分布特征由于反映了樹木對環(huán)境條件的利用程度而具有更加特殊的生態(tài)意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調(diào)查了根系分布特征.根系垂直分布特征的調(diào)查結(jié)果表明,在所有立地上,根系生物量隨著深度的增加而降低,其中細(xì)根的分布深度大于粗根的分布深度.方差分析結(jié)果表明:不同立地上不同徑級根系的分布特征也有明顯的差別,粗根是差異存在的主要原因,陰坡立地上的根系生物量,特別是細(xì)根生物量大于陽坡立地上的.對根系消弱系數(shù)的分析結(jié)果表明,陰坡立地上的根系消弱系數(shù)大于0.982,而陽坡立地上的根系消弱系數(shù)小于0.982,說明陰坡立地上刺槐根系的生物量在深層土壤中的分布相對量更大一些.其中細(xì)根的根系消弱系數(shù)大于粗根的,這種根系分布特征有利于根系對深層土壤水分養(yǎng)分的吸收利用,進(jìn)而促進(jìn)樹木地上部分的生長發(fā)育.圖3表3參15 - abstract : on the loess plateau, water is the main limiting factors for vegetation growth . root distribution characters have special ecological meaning as it reflected the utilizations of trees to the environments . even-aged stands of robinia pseudoacacia on slope lands facing south and north were selected as sampling plots for root distribution investigation . investigatiing results showed that indicated that on all sites, root biomass decreased with depth, and the distribution depth of fine root was deeper than that of coarser root . the results of variance analysis indicated that there were great differences in root biomass among different diameter classes, and coarser root was the main sources of variance, and the root biomass, especially fine root ( < 3mm ) biomass on northern exposition sites was bigger than that on southern exposition sites . analysis of the vertical root distribution parameters, root extinction coefficient, indicated that the value of on northern exposition was more than 0.982, while the value of on southern exposition was less than 0.982, which indicated that the vertical root distribution depth of robinia pseudoacacia on southern exposition was deeper than that on southern exposition . and the distribution depth of fine roots ( < 1mm ) was deeper than that of thicker roots ( < 3mm ), which was in favor of the uptake of water and nutrients from deeper layers, helped the trees to adapt the arid environment, and promoted the growth of the upper parts of the tree
文摘:在中國西北黃土高原地區(qū),水分是樹木生長發(fā)育的主要限制因子.根系分布特征由于反映了樹木對環(huán)境條件的利用程度而具有更加特殊的生態(tài)意義.本研究選擇陽坡和陰坡不同立地上年齡一致的刺槐林調(diào)查了根系分布特征.根系垂直分布特征的調(diào)查結(jié)果表明,在所有立地上,根系生物量隨著深度的增加而降低,其中細(xì)根的分布深度大于粗根的分布深度.方差分析結(jié)果表明:不同立地上不同徑級根系的分布特征也有明顯的差別,粗根是差異存在的主要原因,陰坡立地上的根系生物量,特別是細(xì)根生物量大于陽坡立地上的.對根系消弱系數(shù)的分析結(jié)果表明,陰坡立地上的根系消弱系數(shù)大于0.982,而陽坡立地上的根系消弱系數(shù)小于0.982,說明陰坡立地上刺槐根系的生物量在深層土壤中的分布相對量更大一些.其中細(xì)根的根系消弱系數(shù)大于粗根的,這種根系分布特征有利于根系對深層土壤水分養(yǎng)分的吸收利用,進(jìn)而促進(jìn)樹木地上部分的生長發(fā)育.圖3表3參15